Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

1836 Komarov, provisional designation 1971 OT, is a main-belt asteroid discovered on 26 July 1971 by Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyj.
When was 1836 Komarov first discovered?